【Brass Material】Adapter for R32 R454A/B/C is made from brass, which guarantees reliability and sealing performance over long term use 【Fitment】This adapter fit for R32, R454A/B/C, and other A2L refrigerants, ensuring strong compatibility and secure connections 【Reverse Thread for Safety】Featuring a 1/4 SAE left hand internal thread, this design effectively prevents incorrect connections to incompatible systems, enhancing operational safety 【Dimensions】1/4 Inch Female To 1/4 Inch Male Connection Points For Standard Hvac Equipment Compatibility 【Knurled Grip Design】The surface features a knurled texture for a non slip grip that makes handling easier and installation or removal more convenient 【Application】Ideal for professional HVAC applications, allowing safe and secure tank connections Package Includes: 1 Brass Adapter Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.